EC 2.5 years ago now CT shows a 2mm nodule in lung

Hi, 

I started visiting this forum 2.5 years ago when I had grafe 2 stage Endometrial Cancer. I had a total hysterectomy and external n internal radiotherapy. 

Everything went well until last month. I had a CT scan and a 2mm nodule was found on my left lung. The doctor has arranged another CT scan to check it 3 months later. 

I wonder if anyone had similar experiences that they had nodules in lungs in their post cancer treatment checkups? If yes, what happened?

Many thanks! 

Chui